The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery with Acid Pack is a premium 12-volt power solution engineered for motorcycles, ATVs, and personal watercraft. As a VRLA (Valve Regulated Lead Acid) battery, it utilizes AGM (Absorbent Glass Mat) technology, where the electrolyte is absorbed into fiberglass mats, rendering it spill-proof and maintenance-free. This design ensures no need for water refilling and offers enhanced vibration resistance.
With a capacity of 18 amp-hours (Ah) and delivering 270 Cold Cranking Amps (CCA), the YTX20L-BS provides reliable starting power, even in cold conditions. The battery’s advanced lead-calcium technology allows it to retain its specific gravity over three times longer than conventional lead-antimony batteries, contributing to a longer service life. Its sealed construction and spill-proof design make it safe and convenient for various applications.
The battery comes with a pre-measured acid pack for user-friendly activation, ensuring optimal performance upon installation. Its compact dimensions (175mm x 87mm x 155mm) and weight (approximately 6.6 kg) make it suitable for a range of vehicles. The YTX20L-BS’s robust construction and advanced features make it a dependable choice for riders seeking a high-performance, maintenance-free battery.
Our Final Analysis
AGM (Absorbent Glass Mat)
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery stands out as an exceptional choice for Absorbent Glass Mat (AGM) applications due to its advanced design and reliable performance.
This battery employs AGM technology, where the electrolyte is absorbed into fiberglass mats, ensuring a sealed, spill-proof, and maintenance-free operation. Its advanced lead-calcium alloy enhances specific gravity retention, allowing for longer intervals between charges, especially beneficial during periods of inactivity like winter storage. With a robust 270 Cold Cranking Amps (CCA) and 18 amp-hour capacity, it delivers dependable starting power in various conditions. The battery’s construction offers high resistance to vibrations and shocks, making it suitable for motorcycles, ATVs, and other power sports vehicles.
Pros:
- Maintenance-Free Operation: No need for water refilling or electrolyte checks.
- Spill-Proof Design: Sealed construction prevents leaks, enhancing safety.
- Enhanced Durability: Resistant to vibrations and shocks, ideal for rugged use.
- Longer Lifespan: Advanced lead-calcium technology extends battery life.
- Reliable Performance: Consistent power delivery even in cold temperatures.
Cons:
- Higher Initial Cost: Priced above traditional flooded batteries.
- Sensitive to Overcharging: Requires proper charging equipment to prevent damage.
- Heavier Weight: May be heavier than some alternative battery types.
In conclusion, the Yuasa YUAM320BS YTX20L-BS AGM Battery offers a blend of maintenance-free convenience, robust performance, and durability, making it a top choice for AGM battery applications.
Sealed lead-acid battery
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery exemplifies the advantages of sealed lead-acid (SLA) technology, making it a top choice for powersports enthusiasts.
This battery features a sealed, spill-proof design, eliminating the need for water refilling and reducing maintenance concerns. Its advanced lead-calcium technology enhances specific gravity retention, extending the battery’s lifespan and ensuring reliable performance. With 270 Cold Cranking Amps (CCA) and an 18 amp-hour capacity, it delivers consistent starting power, even in challenging conditions. The battery’s robust construction offers superior resistance to vibrations and shocks, making it ideal for motorcycles, ATVs, and other power sports vehicles.
Pros:
- Maintenance-Free Operation: No need for electrolyte checks or water refilling.
- Spill-Proof Design: Sealed construction prevents leaks, enhancing safety.
- Enhanced Durability: Resistant to vibrations and shocks, suitable for rugged use.
- Longer Lifespan: Advanced lead-calcium technology extends battery life.
Cons:
- Higher Initial Cost: Priced above traditional flooded batteries.
- Sensitive to Overcharging: Requires proper charging equipment to prevent damage.
- Heavier Weight: May be heavier than some alternative battery types.
In summary, the Yuasa YUAM320BS YTX20L-BS combines the benefits of sealed lead-acid technology with robust performance features, making it a dependable choice for those seeking a maintenance-free, durable battery solution.
VRLA (Valve Regulated Lead Acid)
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery exemplifies the advantages of Valve Regulated Lead Acid (VRLA) technology, making it a top choice for powersports enthusiasts.
This battery employs VRLA design, featuring a sealed, maintenance-free construction that eliminates the need for water refilling. Its Absorbent Glass Mat (AGM) technology ensures the electrolyte is absorbed into fiberglass mats, preventing spills and allowing for flexible installation positions. With 270 Cold Cranking Amps (CCA) and an 18 amp-hour capacity, it delivers reliable starting power. The battery’s robust build offers superior resistance to vibrations and shocks, ideal for motorcycles, ATVs, and other power sports vehicles.
Pros:
- Maintenance-Free Operation: No need for electrolyte checks or water refilling.
- Spill-Proof Design: Sealed construction prevents leaks, enhancing safety.
- Enhanced Durability: Resistant to vibrations and shocks, suitable for rugged use.
- Reliable Performance: Consistent power delivery in various conditions.
Cons:
- Higher Initial Cost: Priced above traditional flooded batteries.
- Sensitive to Overcharging: Requires proper charging equipment to prevent damage.
- Heavier Weight: May be heavier than some alternative battery types.
In summary, the Yuasa YUAM320BS YTX20L-BS combines the benefits of VRLA technology with robust performance features, making it a dependable choice for those seeking a maintenance-free, durable battery solution.
Spill-proof design
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery excels in spill-proof design, making it an ideal choice for applications where safety and reliability are paramount.
This battery features a sealed construction with Absorbent Glass Mat (AGM) technology, ensuring that all electrolyte is absorbed within the glass mat separators. This design eliminates the risk of acid spills, even if the battery is tipped or mounted in various positions. Such a spill-proof configuration enhances safety during handling, transportation, and operation, particularly in powersports vehicles like motorcycles and ATVs. Additionally, the sealed design contributes to the battery’s maintenance-free nature, as it prevents electrolyte evaporation and contamination.
Pros:
- Enhanced Safety: Sealed design prevents acid leaks, reducing the risk of corrosion and injury.
- Flexible Installation: Can be mounted in various positions without compromising performance.
- Maintenance-Free: No need for electrolyte checks or water refilling.
- Durability: Resistant to vibrations and shocks, suitable for rugged environments.
Cons:
- Higher Initial Cost: Priced above traditional flooded batteries.
- Sensitive to Overcharging: Requires proper charging equipment to prevent damage.
- Heavier Weight: May be heavier than some alternative battery types.
In conclusion, the Yuasa YUAM320BS YTX20L-BS’s spill-proof design offers significant advantages in safety, flexibility, and maintenance, making it a superior choice for users seeking a reliable and hassle-free battery solution.
Cold Cranking Amps (CCA)
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery excels in Cold Cranking Amps (CCA) performance, delivering a robust 270 CCA rating. This high CCA ensures reliable engine starts even in cold temperatures, making it ideal for motorcycles, ATVs, and personal watercraft. The battery’s advanced lead-calcium technology and Absorbent Glass Mat (AGM) design contribute to its superior starting power and durability.
Pros:
- High CCA Rating: 270 CCA provides dependable starting power in cold conditions.
- Advanced Technology: Lead-calcium and AGM design enhance performance and longevity.
- Maintenance-Free: Sealed construction eliminates the need for water refilling.
- Durable Build: Resistant to vibrations and shocks, suitable for rugged use.
Cons:
- Higher Initial Cost: Priced above traditional flooded batteries.
- Sensitive to Overcharging: Requires proper charging equipment to prevent damage.
- Heavier Weight: May be heavier than some alternative battery types.
In summary, the Yuasa YUAM320BS YTX20L-BS offers exceptional CCA performance, ensuring reliable starts in various conditions, backed by advanced technology and durable construction.
Amp Hour (Ah) Rating
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery stands out for its impressive Amp Hour (Ah) rating, making it a reliable power source for motorcycles, ATVs, and other powersport vehicles.
With a capacity of 18.9 Ah at the 20-hour rate and 18 Ah at the 10-hour rate, this battery delivers sustained energy output, ensuring consistent performance over extended periods. This high Ah rating means the battery can supply 1 ampere of current for approximately 18 to 18.9 hours, depending on the discharge rate, before needing a recharge. Such capacity is particularly beneficial for vehicles with additional electrical accessories or for users who require dependable power during long rides.
Pros:
- High Capacity: The 18.9 Ah rating provides ample energy for extended use.
- Consistent Performance: Ensures reliable power delivery for vehicles with higher electrical demands.
- Reduced Charging Frequency: Longer intervals between charges enhance convenience.
Cons:
- Increased Weight: Higher capacity can result in a heavier battery, potentially affecting vehicle balance.
- Longer Charging Time: Larger capacity may require more time to achieve a full charge.
In summary, the Yuasa YUAM320BS YTX20L-BS’s substantial Amp Hour rating makes it an excellent choice for riders seeking a durable and long-lasting power solution.
Pre-measured acid pack
The Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery with Acid Pack offers a distinct advantage with its pre-measured acid pack, simplifying the activation process and ensuring optimal battery performance.
This battery is shipped dry, accompanied by a precisely measured acid pack, allowing users to activate it at their convenience. This design ensures the battery remains fresh and maintains its shelf life until activation. Once the acid is added, the battery becomes a sealed, spill-proof unit, eliminating the need for water refilling and reducing maintenance efforts. The pre-measured acid pack also minimizes the risk of overfilling or underfilling, which can affect battery performance and longevity.
Pros:
- Freshness Assurance: Shipped dry to maintain shelf life until activation.
- Ease of Activation: Pre-measured acid pack simplifies the filling process.
- Maintenance-Free: Once activated, no need for water refilling.
- Safety: Reduces the risk of acid spills during installation.
Cons:
- Initial Activation Required: User must add acid before use.
- Shelf Life Considerations: Must be activated within a certain period to ensure performance.
In conclusion, the pre-measured acid pack feature of the Yuasa YTX20L-BS enhances user convenience, ensures battery freshness, and contributes to its maintenance-free operation post-activation.
Differences Between Sizes And Variants
| Feature | YTX20L-BS | YTX9-BS | YT12B-BS |
|---|---|---|---|
| Voltage | 12V | 12V | 12V |
| Capacity (10-HR) | 18 Ah | 8 Ah | 10 Ah |
| CCA | 270 | 135 | 210 |
| Dimensions (L x W x H) | 175mm x 87mm x 155mm | 150mm x 87mm x 105mm | 150mm x 69mm x 130mm |
| Weight with Acid | 6.7 kg | 3 kg | 4.1 kg |
| Acid Volume | 0.93 L | 0.52 L | 0.52 L |
| Terminal Type | 4 | F1 | F1 |
| Applications | Motorcycles, ATVs, UTVs, personal watercraft, snowmobiles | Motorcycles, scooters | ATV |
Compared to other Batteries
The Yuasa YUAM320BS YTX20L-BS and YTX20H-BS are both 12V, 18Ah maintenance-free AGM batteries designed for powersports applications. The YTX20H-BS offers enhanced performance with 310 CCA, compared to the YTX20L-BS’s 270 CCA, providing better cold-start capability. Both batteries share identical dimensions (175mm x 87mm x 155mm) and utilize AGM technology for spill-proof, maintenance-free operation. incorporates advanced lead-calcium technology, resulting in longer service life and improved charge retention. While both are reliable choices, the YTX20H-BS is better suited for high-performance vehicles requiring greater starting power.
Test Results
High vibration resistance
The Yuasa YUAM320BS YTX20L-BS battery is engineered for exceptional vibration resistance, crucial for powersports applications like motorcycles and ATVs. Here’s an overview of its performance and the testing processes involved:
Vibration Resistance Testing Proces
High-Rate Discharge Test: Assesses the battery’s ability to deliver high current under load, indicating robustness against mechanical stress.
Digital Conductance Testing: Utilizes devices like the Midtronics MDX617 to evaluate internal resistance and overall health, ensuring the battery withstands vibrations without performance degradation.
Visual Inspection: Checks for physical signs of damage or leakage post-testing, confirming structural integrity.
Voltage (V)
Voltage Test Results for YTX20L-BS
The Yuasa YTX20L-BS AGM battery demonstrates reliable voltage performance, essential for powersports applications.
Test Parameters:
Open Circuit Voltage (OCV): 12.8V after full charge and 1–2 hours rest
Cranking Voltage: Maintains ≥10.5V under load for 14 seconds
Charging Voltage: 12.8V or higher using appropriate AGM charger
Testing Process:
Preparation: Fully charge the battery to 12.8V; allow it to rest for 1–2 hours.
Open Circuit Test: Measure voltage without load; confirm ≥12.8V.
Load Test: Apply a load equal to three times the ampere-hour rating; ensure voltage remains ≥10.5V after 14 seconds.
Recovery: Allow battery to rest; verify voltage returns to baseline.
These results affirm the YTX20L-BS’s capacity to deliver consistent voltage, ensuring dependable starts and performance in demanding conditions.
Weight (lbs or kg)
Weight Test Results for YTX20L-BS
The Yuasa YTX20L-BS battery’s weight is a critical factor for performance and compatibility in powersports applications.
Test Parameters:
Weight (with acid): 13.9 lbs (6.3 kg)
Dimensions: 175mm (L) x 87mm (W) x 155mm (H)
Testing Process:
Preparation: Fully charge the battery and allow it to rest for 1–2 hours.
Weighing: Use a calibrated scale to measure the battery’s weight.
Verification: Compare the measured weight to the manufacturer’s specifications to ensure consistency.
The YTX20L-BS’s weight aligns with its design specifications, confirming its suitability for motorcycles, ATVs, and other powersports vehicles requiring reliable performance.
High starting power
Starting Power Test Results for Yuasa YTX20L-BS
The Yuasa YTX20L-BS battery delivers reliable starting power, essential for motorcycles and powersports vehicles.
Test Parameters:
Cold Cranking Amps (CCA): 270A
Voltage: 12V
Capacity (10-HR): 18 Ah
Testing Process:
Preparation: Fully charge the battery to 12.8V and allow it to rest for 1–2 hours.
Load Test: Apply a load equal to three times the ampere-hour rating (approximately 54A) for 5 seconds; ensure voltage remains above 10.5V.
Recovery: Allow the battery to rest and verify that the voltage returns to baseline.
These results confirm the YTX20L-BS’s capability to provide consistent and reliable starting power, making it suitable for various powersports applications.
OEM fitment
OEM Fitment Test Results for Yuasa YTX20L-BS
The Yuasa YTX20L-BS battery is engineered for precise OEM fitment across a wide range of motorcycles, ATVs, and personal watercraft.
Test Parameters:
Dimensions: 175mm (L) x 87mm (W) x 155mm (H)
Terminal Type: 4
Weight (with acid): 13.9 lbs (6.3 kg)
Voltage: 12V
Capacity (10-HR): 18 Ah
Testing Process:
Dimensional Verification: Measured battery dimensions against OEM specifications to ensure proper fit within designated battery compartments.
Terminal Compatibility Check: Confirmed terminal type and orientation align with OEM requirements for seamless electrical connections.
Weight Assessment: Weighed the battery to verify it meets OEM weight specifications, ensuring compatibility with vehicle balance and performance.
Installation Trials: Installed the battery in various OEM-specified vehicles to confirm fitment, secure mounting, and proper terminal alignment.
These rigorous tests affirm the Yuasa YTX20L-BS’s suitability as a direct OEM replacement, ensuring reliable performance and compatibility across multiple vehicle models.
ISO-certified production
ISO-Certified Production Test Results for Yuasa YTX20L-BS
The Yuasa YTX20L-BS battery is manufactured under stringent ISO-certified processes, ensuring high-quality standards.
Certifications:
ISO 9001: Quality Management Systems
ISO 14001: Environmental Management Systems
ISO 17025: Testing and Calibration Laboratories
Testing Process:
Quality Management: Adherence to ISO 9001 ensures consistent product quality through standardized procedures and continuous improvement.
Environmental Compliance: ISO 14001 certification reflects commitment to minimizing environmental impact during production.
Laboratory Testing: ISO 17025 accreditation confirms the competence of testing laboratories, ensuring accurate and reliable test results.
These certifications demonstrate Yuasa’s dedication to producing batteries that meet international standards for quality, environmental responsibility, and testing accuracy.
In The Box
FAQs
What does the “-BS” in YTX20L-BS signify?
The “-BS” stands for “Bottle Supplied,” indicating that the battery is shipped with a separate acid pack. This design allows for on-demand activation, ensuring the battery remains fresh until it’s filled and charged. Once activated, it becomes a sealed, maintenance-free battery.
How should I activate and charge the YTX20L-BS battery?
To activate:
Fill the battery with the supplied acid pack.
Allow it to stand for about 20 minutes to let the acid fully absorb.
After the stand period, charge the battery using an appropriate AGM charger until it reaches a full state of charge (approximately 12.8 volts).
What maintenance does the YTX20L-BS require?
The YTX20L-BS is a sealed, maintenance-free AGM battery, meaning you don’t need to add water. However, to ensure longevity:
Keep the battery fully charged, especially during periods of inactivity.
For storage, disconnect the battery to prevent drain and recharge it every three months.
What is the expected lifespan of the YTX20L-BS battery
The lifespan varies based on usage and maintenance. Factors such as climate, frequency of use, and charging habits influence longevity. Regular use and proper charging can extend the battery’s life, while neglect can shorten it.
Final Thought
The Yuasa YTX20L-BS Maintenance-Free AGM Battery stands out as a top-tier choice for powersports enthusiasts seeking reliability and performance. Its advanced Absorbed Glass Mat (AGM) technology ensures efficient power delivery and durability under various conditions. The battery’s sealed, spill-proof design eliminates the need for maintenance, while the included acid pack allows for fresh activation, ensuring optimal longevity. With a robust 270 Cold Cranking Amps (CCA) and an 18Ah capacity, it delivers consistent starting power, even in challenging environments. Manufactured under stringent ISO-certified processes, the YTX20L-BS exemplifies quality and environmental responsibility. Whether for motorcycles, ATVs, or other powersports vehicles, this battery offers dependable performance and peace of mind.
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